Ore crusher



Feb.13,194o. O CH 2,190,036

ORE CRUSHER Filed Aug. 6, 1936 3 Sheets-Sheet 1 Int enter. Jim! JZhnmMJ. J. MORCH ORE CRUSHER Feb. 13, 1940.

3 Sheets-Sheet 2 Filed Aug 6, 1936 J. J. MORCH Feb. 13, 1940.

Filed Aug. 6, 1936 Patented Feb. 13, 1940 U I E r v ORECRUSHER I I lJacob Johannes March, Toronto, Ontario, Canada Application August6,1936, Srial No. 94,540 In Canada August9, 1935 I 10 Claims. (01; 83-40) {The principal objects of this invention are to provide a machinewhich will break up and pill-v verize ore to a very fine degree in asingle passage through the mill and requiringthe minimum amount ofpower, and to devise a machine which may be readilytaken apart andassembled, and

in which the parts are so constructed that they may; be easilytransported. 1 i

The principal features of the invention consist in the novelconstructionand arrangement ofa plurality of cone-shaped crushingmembers obliquely eccentrically mounted upon a rotatable shaft andoperating within converging and vdiverging crusher rings which areseparably secured together forming part of theqrigid frame structure inwhich the shaft and rotatable cone crushers are mounted. i M i v e I Inthe accompanying drawings; Figure l is a Vertical mid-sectional Viewthrough a crusher constructed in accordance with this invention. a

Figure 2 is a horizontal sectional view through the line 2-2 of Figurel.

Figure 3 is a horizontal sectional View through" the line 3-3 ofFigure 1. l

Figure 4 is a horizontal sectional viewthrough the line l-d of Figure 1.I i

Figures 5, 5o, 6, 5a, 7 and 7a are a seriesof diagrammatic plan andsectional elevational views illustrating the opposed obliquely eccentricmounting of the crusher cones in centralized and extreme right, and leftpositions.-; V i In the-use of ore-crushing machinery it is fre- Iquently necessary totransport the same over exceedingly rough trails oreven by aeroplane andwhile the: nature of these machinesrequires to beexceedingly strong; yet 'theparts must be of such size and shape as tobe readily portable.

In the construction herein shown the base I, which is of cylindricalform is adapted to contain the motor for driving the shaft of the mill.On this base is mounted a ring 2 which carries a flange plate 3 ofdished formation, upon which is mounted a vertical journal bearing 4.

. A cylindrical member li of a diameter substantially corresponding withthat of the base i is mounted on the ring 2 and is provided with acentral bearing boss 6 supported by a plurality of radial arms "I. Theupper end of the member 5 is formed with an inwardly bevelled portion 3and a plurality of radial arms 9 extending outwardly therefrom carryingthe flange ring H) which has a downwardly extending flange ll.

Suitable roller bearings it are mounted within the boss 6 to support'thevertical shaft l3 which is connected with the motor arranged in the baselarger rocks entering the upper hopper.

through the bearingmember 4. I The top ofthis boss is covered by asealing plate M with a suit.-

able sealing ringsurrounding the shaft to prevent Water and dirt fromentering the bearing.

A ring l5which forms a crusher shell is of a frustro-conical form and ismounted in the 1 flange ring I0 beingreinforoedat intervals byradialexterior ribs EBQAn eccentric sleeve ll is mounted on the shaft l3above-a shoulder l8 in horizontal alignment with the crusher ring 15,the axis of said eccentric being slightly offset obliquely in relationto the, axis of the shaft. Around this eccentric sleeve: is arranged afcone structure 8 9 provided with" a hollow central boss Zilenclosihg aroller baringf'l which is suitably m;

sealed at both top andbottorn.

i A crusher ring 22 oi frustro-conical form is mounted onthe conel9, itbeing provided with steel and-I its periphery is frustro-conical andconverges inwardly from the inner wall 2510f the mcrusher ring l5, sothat'the space between the inner Wall of thecrusher ring andthe come at"20 v the top is much wider than itis at the bottom,

andfthe oblique eccentricity of the sleevel! is such that the" externaldiameter of the bottom edge of the cone approaches very closely to thelower portionvof the crusher ring l5. may be adjusted so that theconeand ring practically touchgto regulate the size of the pulverized'material that is finally passed through the mill.

An eccentricsleeve 25 is obliquely mounted on theshaft l3 above thesleeve El and its axis is 3 offset in relation to the axis of theeccentric ll and is preferably arranged at a greater angle of 1obliquity from the shaft axis than is the axis of the eccentric IT. Aroller bearing 26; surrounds the sleeve 25 and supports a cone 2! whichcar- 49 ries a cast steel crusher cone 28 in the form of afrustro-conical ringwhich is supported by lugs 29 in an adjustableposition. Thelower edge ofthe upper crusherring' 2il overlaps the upperedge of the crusher ring 22 and directs material downwardly. to thespace between the rings l5 and. 22.

The greater angle of obliquity of the upper cone H causes a greatertilting crushing movement which is very effective in crushingthe Acrusher ring 38 of inverted. irustro-conic l form is mounted upon thering l5 and with the cone ring 28 forms a hopper of circular form butthe inner wall of the hopper is eccentric to the outer wall. 55

This space;

.duces a very positive crushing eflect.

It will be understood that through the rotation of the shaft is theobliquely mounted sleeves l1 and 25 will cause the crusher cones carriedthereby to oscillate laterally and with a tilting action within thecrusher rings, and the combined vertical and horizontal action ofaltering the space between the cone and the surrounding ring pro- Thechanging relation of the cones and crusher rings is very clearlyillustrated in the diagrammatic illustration of Figures 5, 6 and '7, and5a, Ga and 7a; Figures 6 and 6a show the relative position.

of the cones and rings across the aligned position of the axes of theeccentrics with the shaft. Figures 5 and 5a illustrate the'right tilt ofthe upper cone concurrent with the lefttilt of the lower cone whileFigures '7 and 7a illustratethe left tilt of the upper cone with theright tilt of the lower cone. The cones are mounted on roller'bearingsso that while the shaft rotates freely to operate the eccentrics, thecrushing cones are operated with an oblique rotary oscillation.

A ring 3| is mounted on the top of the crushing ring 28 and is providedwith a flange 32 extending upwardly to correspond with the flange H ofthe ring ll).

A plurality of fastening devices in the form of turnbuckle rods 33provided with hook ends 3 L to hook over the flanges of said rings arearranged around the assembly and are tightened; to'hold the rings inposition.

The ring 3| is provided with a plurality of inwardly extending radialarms 35 which support a tapering and hollow boss 35 within which v ismounted a roller bearing 37, which bearing-engages a sleeve 38 mountedon the shaft l3. This sleeve is concentric-with the shaft and the shaftis capable of sliding movement therein. The sleeve is provided with aflange 39 at the top formed with a plurality of bosses 40, and spiralcompression springs M are mounted on this 7 flange around said bosses. Asimilarly flanged sleeve 42 engages the springs and isheld in positionbythe cap screws 43. v

Afiange plate 44 iss ecured in the top of the sleeve 42 and engages theannular flange 45 on a jack screw it which is threaded into the end ofthe shaft l3. By operating the jack screw the pressure of the springs Mwhich resiliently opposed longitudinal crushing thrusts may be increasedor decreased to resist downward pressure against the shaft through theeffect of crushing rock in the annular spaces between the cone crushersand the ring crusher and the crushing clearance and pressure between thecrusherrings l5 and 22 may in this way be varied.

A safety shear ring 45' is mounted in a groove in the ring 44 andengages the underside of the.

flange 4'5 and suspends the shaft. In the event of a sudden overloadcaused by jamming of rocks in the crusher the ring 45'WV111 shear andrelieve the stress.

A water bell 41 is arranged over the end bearings of the shaft and pourswater downwardly on the outside of the central boss of thetop framering. This water pours into the converging hopper formation between theupper crusher ring and the upper cone, and crushed rock is washeddownwardly, flowing over the bevel-8 of the member 5 into a trough 48surrounding the member 5 which carries off the ground material.

It will be understood that in the operation of this machine, as theshaft is rotated in its fixed bearings the eccentric sleeves obliquelymounted thereon carry the bearingsengaging therewith,

I to the sectional diagrams in Figures 5 to '7 and,

5a, 6a and 7a, that the rotary oscillation of the pair of crusher cones,being carried on oblique axes, imparts to each cone a tipping movementtoward and from the wall of the crusher rings, and as the lower edge ofthe upper cone 28 draws away from the encircling ring 30, allowing thesmaller particles of rock to fall through, the skirt of the lower cone22 immediately therebelow is tilted into close proximity to the ringsurface 24, thus catching and holding the particles of rock until theyare pulverized to the finest possible degree in accordance with thesetting of the cones.

It is important to note that with the construc tion herein described thedouble cone arrangement is such that the discharge of rock from theupper cone to the lower may be synchronized in such mannerthat the feedto the lower cone will bein proportion to the degree of fineness ofmaterial required in the final product.

Further it will be noted that a four point crushing is achieved with thetwo eccentrically and obliquely mounted cones since the eccentric displacement of each cone will set up a crushing action in one zone whilethe wabble effect due to the oblique mounting will set up a crushingaction in another zone.

The oblique eccentricity of the respective cone axes is such that thecone axes are disposed in planes which intersect one another or it maybe said that the cone axes have a substantial focal point intermediateof the height or length of cones producing a wabble that creates acrushing' effect on opposite sides reducing the bending moment andfacilitating discharge.

The structure of the machine is such that it may be very readilydis-assembled. The upper bearing ring section may be lifted off the topcrusher section and the top crusher section taken from the lower one andthe lower one taken from the upper space ring. Similarly the cones may ibe separated so thatall the parts may be of such size and weight as maybe handled readily under diflicult transport conditions. Owing to thisreadiness of dis-assembling, broken parts may be readily replaced orparts may be removed for repair.

- What I claim as my invention is:

1. An ore crusher having superposed converging and diverging crusherrings, a shaft concentric therewith, and cones eccentrically mounted inoffset angular relation to each other to rotate on said shaft andoscillate within respective rings, the axes of said cones being arrangedat oblique angles in diverging relationship to each other.

2. In an ore crusher of the type having superposed separable convergingand diverging crusher rings and. a shaft concentric therewith, coneseccentrica-lly and obliquely mounted to rotate on said shaft inco-operative crushing relation to said respective rings, the obliqueaxes of said cones having a substantially common focal pointintermediate of the depth of thecones.

3. In an ore crusher of the type having superposed separable convergingand diverging crusher rings and a shaft extending therethrough, crushercones eccentrically and obliquely mounted on said common shaft forrotation relative thereto and co-operative with respective crusherrings, the obliquity of the axis of one of said cones being greater thanthe obliquity of the next succeeding cone, l

4. In an ore crusher of the type having superposed converging anddiverging crusher rings, and a shaft concentric therewith,conesobliquely mounted to rotate on said shaft in co-operative crushingrelation to said respective rings, the oblique axes of said conescrossing the shaft exis within the axial length of the respective conesand each diverging therefrom to pass through a transverse plane at apoint intermediately between the end extremities of said cones.

5. In an ore crusher of the type having axially converging and divergingcrusher rings disposed in axial progression and crusher cones disposedwithin and respectively co-operative with said crusher rings, thecombination therewith of means for differentially tilting said crushercones about the axis of the crusher rings including a drive shaft forsaid crushercones having an axis fixed in relation to said crusher ringsand extending therethrough.

6. An ore crusher having superposed converging and diverging crusherrings,a shaft journalled centrally of said rings, a crusher coneobliquely eccentrically mounted on said shaft to operate with a rotativetilting movement in relation to the converging ring, and a secondcrusher cone obliquely eccentrically mounted on said shaft to operatewith a tilting rotative movement in relation to the diverging ring, theeccentric mounting of the crusher cones being such that as a point onthe bottom edge of the lower cone is eccentrically tilted toward itscooperating ring a corresponding point on the bottom edge of the uppercone is eccentrically tilted away from its co-operating ring.

7. In an ore crusher having superposed converging and diverging crusherrings and a shaft concentric therewith, cones obliquely eccentrica llymounted to rotate about said common shaft on independent axes so thateach is tilted and displaced relative to the other in co-operativerelation to its respective ring, said cones each diverging downwardly inclose-coupled relation, with the lower divergent end of the upper coneoverhanging the upper convergent end of the lower cone in. telescopicnon-contacting relation permitting the said relative tilting of thecones in their close-coupled relation while directing the crushedmaterial from the upper cone over the outer crushing surface of thelower cone.

8. An ore crusher having a peripheral crushing surface, a shaft mountedwith its axis in fixed concentric relation to the axis of saidperipheral crushing surface, and a crushing member rotatable about anaxis which is obliquely disposed to the'fixed axis of the said shaft andwhich intersects the shaft axis substantially centrally of the axiallength of the crushing member, whereby said crushing member presents asubstantially balanced double peripheral crushing cooperain oppositelyoifset relation to each other to independently rotate on said shaft andoscillate each about a zone substantially centrally of its axial lengthwithin its respective ring, the oblique mounting being such that a pointon the bottom edge of the lower cone is tilted toward its cooperatingring as a correspondingpoint on the bottom edge of the upper cone istilted away from its co-operating ring.v

JACOB JQI-IANNES MORCH.

